ACTIVE

ISB BUILDING TECHNICS

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Financial year 2025 · closed on 31/12/2025

Net result

866,6 k €

-13.2% YoY

Revenue

25,3 M €

+0.2% YoY

Equity

2,7 M €

+6.8% YoY

Workforce

87,8 ETP

-14.9% YoY

What does ISB BUILDING TECHNICS do?

ISB BUILDING TECHNICS is a Public limited company incorporated in 1950. Its registered office is in Saint-Josse-ten-Noode. It employs on average 87,8 ETP workers (FTE).

Legal situation

● Normal situation

BCE/KBO no. / VAT

BE 0402.940.869

Incorporation

10/10/1950

Legal form

Public limited company

Registered office

Boulevard du Roi Albert II 19
1210 Saint-Josse-ten-Noode · BruxellesSee on map

Contributed capital

2 225 000,00 €

Latest accounts

31/12/2025

Average workforce

87,8 ETP

Joint committees (3)

Signals

ProfitableGood liquidityPositive cashflowPositive EBITDAHealthy social debtsHigh revenue

View the BCE/KBO Public Search record →

Health score

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✦ Verdict · Analyst summary

Financials

Trend over 18 financial years

	2025		2024		2023		2022		2021		2020		2019		2018		2017		2016		2015		2014		2013		2012		2011		2010		2009		2008
Income statement
Revenue	25,3 M €	+0.2%	25,2 M €	+4.0%	24,2 M €	+10.2%	22 M €	+0.9%	21,8 M €	+0.6%	21,7 M €	-7.7%	23,5 M €	+1.5%	23,1 M €	-0.6%	23,3 M €	-6.1%	24,8 M €	-17.4%	30 M €	+5.4%	28,5 M €	-1.1%	28,8 M €	+3.2%	27,9 M €	-0.2%	27,9 M €	-4.2%	29,1 M €	+35.9%	21,5 M €	+44.8%	14,8 M €
EBITDA	1,3 M €	+10.3%	1,1 M €	+494%	193,5 k €	-69.1%	626,9 k €	+163%	238,7 k €	+25.6%	190 k €	+7.3%	177,2 k €	+116%	-1,1 M €	-222%	921,6 k €	+308%	-442,1 k €	-154%	823,4 k €	-37.1%	1,3 M €	-8.5%	1,4 M €	+18.5%	1,2 M €	-12.3%	1,4 M €	-39.3%	2,3 M €	+79.1%	1,3 M €	-23.1%	1,6 M €
Operating result	1,2 M €	-10.1%	1,3 M €	+669%	175,6 k €	-80.1%	882,2 k €	+131%	381,8 k €	+301%	95,3 k €	-63.8%	262,9 k €	+120%	-1,3 M €	-264%	807 k €	+150%	-1,6 M €	-489%	416,7 k €	-58.1%	995,1 k €	-9.3%	1,1 M €	+18.7%	924,4 k €	-26.2%	1,3 M €	-41.1%	2,1 M €	+249%	609,5 k €	-50.0%	1,2 M €
Net result	866,6 k €	-13.2%	998,4 k €	+2117%	-49,5 k €	-111%	457,1 k €	+86.7%	244,8 k €	+565%	36,8 k €	-76.4%	155,9 k €	+112%	-1,3 M €	-269%	789 k €	+145%	-1,7 M €	-922%	210,9 k €	-65.8%	616,1 k €	-8.6%	674,3 k €	-0.8%	679,4 k €	-14.3%	792,9 k €	-29.1%	1,1 M €	+234%	335,4 k €	-61.3%	865,9 k €
Balance sheet
Equity	2,7 M €	+6.8%	2,6 M €	+28.0%	2 M €	-2.4%	2 M €	+28.7%	1,6 M €	+18.2%	1,3 M €	+2.8%	1,3 M €	+13.5%	1,2 M €	-53.7%	2,5 M €	+13.1%	2,2 M €	-19.6%	2,7 M €	+8.4%	2,5 M €	+3.6%	2,4 M €	+78.9%	1,4 M €	-0.3%	1,4 M €	-0.1%	1,4 M €	-0.2%	1,4 M €	-0.3%	1,4 M €
Total assets	13,2 M €	+9.6%	12 M €	+11.4%	10,8 M €	+21.0%	8,9 M €	-14.5%	10,4 M €	+41.7%	7,4 M €	-5.1%	7,8 M €	-9.0%	8,5 M €	-19.6%	10,6 M €	-7.6%	11,5 M €	+2.8%	11,2 M €	-11.3%	12,6 M €	-8.7%	13,8 M €	-51.7%	28,5 M €	-4.4%	29,8 M €	-8.7%	32,7 M €	-7.2%	35,2 M €	+26.6%	27,8 M €
Cash	299,3 €	-89.8%	2,9 k €	-31.2%	4,3 k €	-86.3%	31,3 k €	-97.6%	1,3 M €	+278%	342,4 k €	+232%	103,1 k €	-29.7%	146,7 k €	-93.0%	2,1 M €	-16.5%	2,5 M €	+18.2%	2,1 M €	-46.9%	4 M €	+32.1%	3 M €	+40.0%	2,2 M €	-26.2%	2,9 M €	+11.2%	2,6 M €	-16.8%	3,2 M €	+206%	1 M €
Debts	9,4 M €	+10.9%	8,4 M €	+9.6%	7,7 M €	+22.9%	6,3 M €	-19.8%	7,8 M €	+57.8%	5 M €	-9.9%	5,5 M €	-9.3%	6,1 M €	-11.6%	6,8 M €	-11.1%	7,7 M €	+13.9%	6,8 M €	-18.4%	8,3 M €	-11.8%	9,4 M €	-62.8%	25,3 M €	-5.2%	26,7 M €	-8.8%	29,2 M €	-8.4%	31,9 M €	+29.2%	24,7 M €
Other
Workforce	87,8 ETP	-14.9%	103,2 ETP	-4.4%	108,0 ETP	-6.2%	115,1 ETP	-12.7%	131,9 ETP	-5.7%	139,9 ETP	-6.7%	149,9 ETP	-0.9%	151,3 ETP	+3.4%	146,3 ETP	-10.0%	162,6 ETP	-0.7%	163,7 ETP	+0.6%	162,7 ETP	+0.4%	162,1 ETP	-2.3%	165,9 ETP	-2.0%	169,2 ETP	+1.7%	166,4 ETP	+8.3%	153,6 ETP	+13.4%	135,5 ETP

Estimate

Indicative valuation

As an indication, this company is worth

between 10 M€ and 25 M€

See the valuation

Governance

Board of directors

Seen on filing of 31/12/2025 · 5 active · 56 ended

Active mandates

Iris TRUYEN

Managing director · since 23 avril 2025 · until 30 mai 2028

Active

Nicolas ROGEZ

Chairman of the board of directors · since 23 avril 2025 · until 30 mai 2028

Active

Antoine LOHEST

Managing director · since 13 juin 2024 · until 23 avril 2025

Active

Natalie DEWULF

Chairman of the board of directors · since 13 juin 2024 · until 23 avril 2025

Active

Xavier ALLARD

Director · since 20 juin 2022 · until 26 mai 2026

Active

Ended mandates

XAVIER ALLARD

Director · since 20 juin 2022 · until 27 mai 2025

Ended

Antoine LOHEST

Managing director · since 01 juin 2022 · until 28 mai 2024

Ended

Antoine LOHEST

Managing director · since 01 juin 2022 · until 13 juin 2024

Ended

ANTOINE LOHEST

Managing director · since 01 juin 2022 · until 20 juin 2022

Ended

At this address

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Annual accounts

Full financial information

	2025	2024	2023	2022	2021	2020
Type of account	Full model	Full model	Full model	Full model	Full model	Full model
Start of the financial year	01/01/2025	01/01/2024	01/01/2023	01/01/2022	01/01/2021	01/01/2020
Closing of the financial year	31/12/2025	31/12/2024	31/12/2023	31/12/2022	31/12/2021	31/12/2020
Length of the financial year	12 months	12 months	12 months	12 months	12 months	12 months
Filing date	27/05/2026	16/06/2025	23/07/2024	01/08/2023	13/07/2022	09/07/2021
General meeting	26/05/2026	27/05/2025	13/06/2024	30/05/2023	20/06/2022	25/05/2021
Currency of the financial year	EUR	EUR	EUR	EUR	EUR	EUR
NBB quality label	Satisfying controls	Satisfying controls	Satisfying controls	Satisfying controls	Satisfying controls	Satisfying controls

Ratios

Financial ratios

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Filings

Annual accounts filings

26 filings with the NBB

Model	Closing	General meeting	Filed	Language	Document
Full model	31/12/2025	26/05/2026	27/05/2026	French	PDF
Full model	31/12/2025	26/05/2026	27/05/2026	Dutch	PDF
Full model	31/12/2024	27/05/2025	16/06/2025	French	PDF
Full model	31/12/2024	27/05/2025	16/06/2025	Dutch	PDF
Full model	31/12/2023	13/06/2024	23/07/2024	French	PDF
Full model	31/12/2023	13/06/2024	08/07/2024	Dutch	PDF
Full model	31/12/2022	30/05/2023	01/08/2023	French	PDF
Full model	31/12/2022	30/05/2023	20/07/2023	Dutch	PDF
Full model	31/12/2021	20/06/2022	13/07/2022	French	PDF
Full model	31/12/2021	20/06/2022	13/07/2022	Dutch	PDF
Full model	31/12/2020	25/05/2021	09/07/2021	French	PDF
Full model	31/12/2019	29/05/2020	25/06/2020	French	PDF
Full model	31/12/2018	28/05/2019	25/06/2019	French	PDF
Full model	31/12/2017	29/06/2018	26/07/2018	French	PDF
Full model	31/12/2016	31/05/2017	30/06/2017	French	PDF
Full model	31/12/2015	31/05/2016	14/06/2016	French	PDF
Full modelCorrection	31/12/2014	26/05/2015	22/09/2015	French	PDF
Full model	31/12/2014	26/05/2015	06/08/2015	French	PDF
Full model	31/12/2013	27/05/2014	24/06/2014	French	PDF
Full model	31/12/2012	28/05/2013	24/06/2013	French	PDF
Full model	31/12/2011	03/04/2012	27/06/2012	French	PDF
Full model	31/12/2010	05/04/2011	29/06/2011	French	PDF
Full model	31/12/2009	06/04/2010	23/06/2010	French	PDF
Full model	31/12/2008	07/04/2009	14/05/2009	French	PDF

View all 26 filings

Estimate

Indicative valuation

Order of magnitude

As an indication, this company is worth

between 10 M€ and 25 M€

The detail comes with the Business plan: low and high bounds, the valuation bridge for each financial year, transaction multiples by sector and size, group valuation and exports.

Discover the Business plan

Disclaimer

Indicative estimate based on public sector multiples and the filed annual accounts. It is neither a certified valuation nor financial or investment advice.

Governance

Board of directors

Seen on filing of 31/12/2025 · 5 active · 56 ended

Active mandates

Iris TRUYEN

Managing director · since 23 avril 2025 · until 30 mai 2028

Active

Nicolas ROGEZ

Chairman of the board of directors · since 23 avril 2025 · until 30 mai 2028

Active

Antoine LOHEST

Managing director · since 13 juin 2024 · until 23 avril 2025

Active

Natalie DEWULF

Chairman of the board of directors · since 13 juin 2024 · until 23 avril 2025

Active

Xavier ALLARD

Director · since 20 juin 2022 · until 26 mai 2026

Active

Ended mandates

XAVIER ALLARD

Director · since 20 juin 2022 · until 27 mai 2025

Ended

Antoine LOHEST

Managing director · since 01 juin 2022 · until 28 mai 2024

Ended

Antoine LOHEST

Managing director · since 01 juin 2022 · until 13 juin 2024

Ended

ANTOINE LOHEST

Managing director · since 01 juin 2022 · until 20 juin 2022

Ended

Shareholders

Ownership and network

Looking for more information about this company?

Try for 7 days

Belgian Official Gazette

Belgian Official Gazette publications

Other29/07/2026
DIVERSEN
PDF
Other29/07/2026
DIVERS
PDF
Other02/03/2026
DIVERSEN
PDF
Other02/03/2026
DIVERS
PDF
Mandates09/07/2025
DIVERSEN - ONTSLAGEN - BENOEMINGEN
PDF
Mandates09/07/2025
DIVERS - DEMISSIONS, NOMINATIONS
PDF
Other10/07/2024
DIVERSEN
PDF
Other10/07/2024
DIVERS
PDF

Source: Belgian Official Gazette

Competition

Similar companies

A company's peers, by sector and size, are included in the Business plan.

See the Business plan

2025
Annual accounts 2025866,6 k €↓
2024
Annual accounts 2024998,4 k €↑
2024
Name changeISB BUILDING TECHNICS
2023
Annual accounts 2023-49,5 k €↓
2022
Annual accounts 2022457,1 k €↑
2021
Annual accounts 2021244,8 k €↑
2021
Name changeISB BUILDINGS TECHNICS
2020
Annual accounts 202036,8 k €↓
2019
Annual accounts 2019155,9 k €↑
2018
Annual accounts 2018-1,3 M €↓
2017
Annual accounts 2017789 k €↑
2016
Annual accounts 2016-1,7 M €↓
2015
Annual accounts 2015210,9 k €↓
2014
Annual accounts 2014616,1 k €↓
2013
Annual accounts 2013674,3 k €↓
2012
Annual accounts 2012679,4 k €↓
2011
Annual accounts 2011792,9 k €↓
2010
Annual accounts 20101,1 M €↑
2009
Annual accounts 2009335,4 k €↓
2008
Annual accounts 2008865,9 k €
10/10/1950
IncorporationPublic limited company

10/15	1 240 000	1 180 000	1 050 000
70	8 630 000	8 120 000	7 940 000
9904	412 000	388 000	301 000
17/49	2 970 000	3 140 000	3 380 000
9087	24,3	23,1	21,8

ISB BUILDING TECHNICS

Overview

What does ISB BUILDING TECHNICS do?

Trend over 18 financial years

Indicative valuation

Board of directors

Other companies at this address

Financials

Full financial information

Financial ratios

Annual accounts filings

Valuation

Indicative valuation

Directors & structure

Board of directors

Ownership and network

Publications

Belgian Official Gazette publications

Similar companies

Similar companies

Timeline